Observations on certain features to be seen in a photograph of haloes taken by Dr. Emil Schulthess in Antarctica

Abstract

Abstract A more complete theory than has been available before of the Lowitz arc and its associated upward pointing companion, is given. The theory of the supralateral arc to the halo of 46° is also given and it is shown that, at least in the case of the halo photographed, the suggestion put forward by Hastings (1920a) about the nature of the halo of 46° is untenable. It follows that his explanation of the arcs of contact to this halo have also to be revised. Alternative explanations are put forward.